A helpful article dealing with the early indicators for Parkinsons Disease
By Melanie Haiken, Caring.com senior editor
Let's be honest: A diagnosis of
Parkinson's disease can be pretty unnerving. In fact, an April 2011 survey by
the National Parkinson's Foundation revealed that people will avoid visiting
the doctor to discuss Parkinson's even when experiencing worrisome symptoms,
such as a tremor.
The problem, however, is that waiting prevents you from
beginning treatment that -- although it can't cure Parkinson's --
can buy you time. "We now have medications with the potential to slow
progression of the disease, and you want to get those on board as soon as
possible," says Illinois neurologist
Michael Rezak, M.D., who directs the American Parkinson's Disease Association
National Young
Onset Center.
Parkinson's disease (PD) occurs when nerve cells in the
brain that produce the neurotransmitter dopamine begin to die off. When early
signs go unnoticed, people don't discover they have Parkinson's until the disease
has progressed. "By the time you experience the main symptoms of Parkinson's, such as tremor and
stiffness, you've already lost 40 to 50 percent of your dopamine-producing
neurons. Starting medication early allows you to preserve the greatest possible
number of them," Rezak explains.
Here, 10
often-missed signs that can help you identify and get early treatment for
Parkinson's.
1.
Loss of sense of smell
This is one
of the oddest, least-known, and often earliest signs of Parkinson's disease,
but it almost always goes unrecognized until later. "Patients say they
were at a party and everyone was remarking on how strong a woman's perfume was,
and they couldn't smell it," says Rezak.
Along with
loss of smell may come loss of taste, because the two senses overlap so much.
"Patients notice that their favorite foods don't taste right," Rezak
says.
Dopamine is
a chemical messenger that carries signals between the brain and muscles and
nerves throughout the body. As dopamine-producing cells die off, the sense of
smell becomes impaired, and messages such as odor cues don't get through. Some
researchers consider this change so revealing that they're working to develop a
screening test for smell function.
2. Trouble sleeping
Neurologists
stay on the alert for a sleep condition known as rapid eye-movement behavior
disorder (RBD), in which people essentially act out their dreams during REM
sleep, the deepest stage of sleep. People with RBD may shout, kick, or grind
their teeth. They may even attack their bed partners. As many as 40 percent of
people who have RBD eventually develop Parkinson's, Rezak says, often as much
as ten years later, making this a warning sign worth taking seriously.
Two other sleep problems commonly associated with
Parkinson's are restless leg syndrome (a
tingling or prickling sensation in the legs and the feeling that you have to
move them) and sleep apnea (the
sudden momentary halt of breathing during sleep). Not all patients with these
conditions have Parkinson's, of course, but a significant number of Parkinson's
patients -- up to 40 percent in the case of sleep apnea -- have these
conditions. So they can provide a tip-off to be alert for other signs and
symptoms.
3.
Constipation and other bowel and bladder problems
One of the
most common early signs of Parkinson's -- and most overlooked, since there are
many possible causes -- is constipation and gas. This results because
Parkinson's can affect the autonomic nervous system, which regulates the
activity of smooth muscles such as those that work the bowels and bladder. Both
bowel and bladder can become less sensitive and efficient, slowing down the
entire digestive process.
One way to recognize the difference between ordinary
constipation and constipation caused by Parkinson's is that the latter is often
accompanied by a feeling of fullness, even after eating very little, and it can
last over a long period of time. When the urinary tract is affected, some people
have trouble urinating while others begin having episodes of incontinence. The medications used to treat Parkinson's are effective for this and other
symptoms.
4. Lack of facial
expression
Loss of
dopamine can affect the facial muscles, making them stiff and slow and
resulting in a characteristic lack of expression. "Some people refer to it
as 'stone face' or 'poker face,'" says neurologist Pam Santamaria, a
Parkinson's expert at the Nebraska Medical Center
in Omaha.
"But it's really more like a flattening -- the face isn't expressing the
emotions the person's feeling."
The term
"Parkinson's mask" is used to describe the extreme form of this
condition, but that doesn't come until later. As an early symptom, the changes
are subtle: It's easiest to recognize by a slowness to smile or frown, or
staring off into the distance, Santamaria says. Another sign is less frequent
blinking.
This sign is
particularly common in women, who have reported it as the third most-common
warning sign they noticed (after tremor and stiffness) in surveys about how
they first became aware of the disease.
Parkinson's-related
neck pain differs from common neck pain mainly in that it persists, unlike a
pulled muscle or cramp, which should go away after a day or two. In some
people, this symptom shows up less as pain and more as numbness and tingling.
Or it might feel like an achiness or discomfort that reaches down the shoulder
and arm and leads to frequent attempts to stretch the neck.
6. Slow, cramped
handwriting
One of the
symptoms of Parkinson's, known as bradykinesia, is the slowing down and loss of
spontaneous and routine movement. Handwriting is one of the most common places
bradykinesia shows up. Writing begins to become slower and more labored, and it
often looks smaller and tighter than before. "Sometimes a family member
will notice that someone's handwriting is becoming very spidery and hard to
read," Santamaria says.
Washing and
dressing are other areas where bradykinesia appears. Someone may take a long
time to get dressed or be unable to deal with zippers and other fasteners.
7.
Changes in voice and speech
As the brain
signals and muscles that control speech are affected by Parkinson's, a person's
voice begins to change, often becoming much softer and more monotone. This is
frequently one of the first early signs of Parkinson's that family and friends
notice, often long before the patient becomes aware of it.
Slurring
words is also characteristic of Parkinson's, because as the facial muscles
stiffen, it becomes harder to enunciate clearly. "Some patients begin to
have trouble opening their mouths as wide, making speech harder to hear and
understand," says Rezak. This subtle sign is so characteristic of
Parkinson's that researchers are working on a voice analysis technique that
might eventually be used as an early screening and diagnostic tool.
8.
Arm doesn't swing freely
"Reduced
arm swing" is how doctors describe this symptom, but that doesn't fully
capture what some Parkinson's patients first remember noticing. Instead, think
of this sign as a subtle stiffness and reduced range of motion: reaching for a
vase on the highest shelf or stretching out to return a serve in tennis and
noticing the arm won't extend as far.
"With
the onset of Parkinson's, people begin to have what we call increased tone,
which means the muscles are stiffer and more limited," says Santamaria.
"The arm just won't go where the brain tells it to go." Some people
first notice this when walking, as one arm swings less than the other. One way
to distinguish this symptom from arthritis or injury: The joints are unaffected
and there's no pain.
9. Excessive sweating
When Parkinson's affects the autonomic nervous system, it
loses its ability to regulate the body, which can cause to changes in the skin
and sweat glands. Some people find themselves sweating uncontrollably when
there's no apparent reason, such as heat or anxiety. For a woman, these attacks
may feel much like the hot flashes of menopause. The official term for this
symptom is hyperhidrosis.
This
condition can also show up in the form of excessively oily skin or an oily
scalp resulting in dandruff. Many Parkinson's sufferers also notice a problem
with excessive saliva, but this is actually caused by difficulty swallowing
rather than producing more saliva.
10. Changes in mood and
personality
Experts aren't certain why, but there are a variety of
related personality changes that
come with Parkinson's, including pronounced anxiety in new situations, social
withdrawal, and depression. Several studies show that depression, in someone
who hadn't previously experienced it, was the first sign many Parkinson's
patients and their families noticed, but at the time they weren't able to
attribute it to Parkinson's.
Some
people also experience subtle changes in their thinking abilities, particularly
in concentration and the so-called "executive functions" that govern
planning and executing tasks. The first sign of decline is loss of ability to
multitask. "People who used to be able to do three or four things at once
perfectly well find that they have to do one thing at a time or they can't keep
it all straight," Rezak says. Some experts believe that thinking problems
and mood issues go hand in hand -- that the sense of slipping mentally leads to
anxiety, feeling overwhelmed, and social withdrawal.